R APID CITY, S.D. (KOTA) - U.S. Highway 14A is closed as a rockslide sent boulder tumbling down a cliffside in Spearfish Canyon Saturday morning. In a post made on Facebook, the South Dakota ...

High-definition map with accurate lane-level information is crucial for autonomous driving, but the creation of these maps is a resource-intensive process. To this end, we present a cost-effective ...